多载波Ds-CDMA系统抗干扰能力分析  

Anti-interference capability analysis of multicarrier DS-CDMA

作　　者：徐国雄[1] 甘良才[1] 黄天锡[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430079

出　　处：《电波科学学报》2003年第2期166-171,共6页Chinese Journal of Radio Science

摘　　要：结合并行转输和多载波调制技术 ,提出了一种多载波直接序列码分多址模型 ,对系统在存在窄带干扰的Rayleigh衰落信道下的性能进行了理论分析 ,并同Rake接收的单载波DSCDMA系统进行了比较。分析和仿真表明 :该系统具有较强的抑制窄带及多址干扰的能力 ,同单载波DSCDMA系统相比 。In this paper, a multicarrier DS-CDMA system is proposed by integrating parallel transmission with multi-carrier modulation (MCM) techniques. The model performance over Rayleigh fading channel with narrow-band interference present is analyzed, and compared to the performance of single-carrier Rake DS CDMA system. It is shown from the simulation results that the presented model has the capability of suppressing narrow-band interference and multiple-access interference and can support a larger number of users, compared to the single-carrier DS-CDMA system.

关 键 词：多载波 DS-CDMA 直接序列码分多址 窄带干扰 RAYLEIGH衰落 

分 类 号：TN929.533[电子电信—通信与信息系统]